Injection device



FIG. 1 is a perspective view taken from the top, left side and front end of the injection device showing my design;

FIG. 2 is a bottom plan view of the injection device of FIG. 1;

FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image thereto; and,

FIG. 4 is a front end view of the injection device of FIG. 1. 

The ornamental design for an injection device, as shown and described. 